Improved gum scrubber



NITED STATES PATENT OFFICE.

JOSEPH OLD, OF READING, PENNSYLVANIA.

IMPROVED GUM SCRUBBER.

To allfwhom it may concern Be it known that I, JosErH OLD, of Reading, in the county of Berks and State of Pennsylvania, have invented a new and useful Improvement in Scrubbers; and I do hereby declare that the following is a full, clear, and eX- act description of the construction of the same, reference being had to the annexed drawings, making a part of this specication, in which- Figure I is a perspective View of the scrubber; Fig. II, a plan View. Fig. III is a transverse section through part of the scrubber, Figs. IV and VI, plan views of detached parts of the scrubber. Fig. V is a transverse section in the line l 2, Fig. IV. Fig. VII is a cross-section on the line 3 4, Fig. VI. Fig. VIII is a transverse section on the line 5 6, Fig. II; and Fig. IX is a transverse section on the line 7 8, Fig. II.

Similar letters refer to in the different figures.

This invention consists of a scrubber constructed, as fully described hereafter, so as t0 economize and facilitate the renewal and replacing of the gum strips, and enable the operator to impart any desired rigidity or iiexibility to the strips.

The head-piece B consists of a central plate, from which extend two inclined iianges, c a, and at the center of the plate and perpendicular to the same is a socket for the reception of a handle, E.

From a strip, C, the sides of which are beveled to correspond with the inclined inner sides of the iianges a a., project screw-rods g, which extend through the head-piece B, and 0n the upper ends of which turn nuts H.

Between each inclined side of the strip C corresponding parts and the adjacent flan ge, c, is coniined one edge of a strip, D, of rubber or other equivalent material.

This scrubber can be turned or reversed at pleasure, so as to make use of both the strips of gum or gutta-percha, inasmuch as the socket F and handle E are perpendicularly to the head-piece B, and as the two strips of guttapercha are at the same angle to the central portion of the head-piece.

It will be seen that it is only necessary to turn the nuts H to release the strips O, or to secure them as firmly as may be desired, and that as each strip is confined between two parlallel surfaces of considerable width, it will be much less iiexible than if merely doubled over a rod secured in a recess, while less gum is required. j

It will also be seen that when one edge of a strip becomes worn the strip may be reversed, so as to present a new edge for scrubbing, and that by inserting the strips to a greater or less extent between the confining-plates, so as to regulate the Width of the projecting portion, they may be rendered as rigid or as ilexible as may be desired, and one of the strips may project farther from the head than the other, to render the frequent adjustment of the strips unnecessary. 1

I claim as my invent-ion and by Letters Patent- The scrubber constructed ot' the head B, having inclined projecting sides or flanges a, and a socket at its center, in a line perpendicular thereto, the independent rubber strips D, and the adjustable wedge B, whereby the strips are pressed against the flanges of the head at or about right angles to each other, so as to allow each strip to be presented at right angles to the floor, substantially as described, for the purpose specified.

JOSEPH OLD.

desire to secure Witnesses:

GEORGE PRINTZ, J osEPH SHEARER. 

